The Seat,valve, cataloged under National Stock Number 4820-00-375-8371, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-375-8371 |
| Primary Part Number | 4700-3112615PC548346 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.312 INCHES NOMINAL IN |
| Flange Diameter | 1.000 INCHES NOMINAL IN |
| Thread Length | 0.540 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Seal Accommodation Type | GROOVED |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 0.435 INCHES NOMINAL IN |
| Nominal Thread Size | 0.625 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.653 INCHES NOMINAL IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4700-3112615PC548346 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 4700-3130474PCALL | 5/9 Secondary reference U.S. Government activity |
| 548346PCALL | 5/9 Secondary reference Bendix Corp the |
| 548346 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 548346 | 5/9 Secondary reference Bendix Corp the |
| 548346 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 4700-3112615PC548346 | 5/9 Secondary reference U.S. Government activity |
| 4700-3130474PCALL | 5/9 Secondary reference Naval Sea Systems Command |
| 547820PC548346 | 5/9 Secondary reference Bendix Corp the |
NSN 4820-00-375-8371 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-375-8371 has 1 manufacturer part number on file: 4700-3112615PC548346 (Naval Sea Systems Command).
Key specifications for 4700-3112615PC548346: Flange Seat to Disk End Height: 0.312 INCHES NOMINAL IN; Flange Diameter: 1.000 INCHES NOMINAL IN; Thread Length: 0.540 INCHES NOMINAL SINGLE THREADED PORTION IN; Seal Accommodation Type: GROOVED. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.